Channel enhancement method, terminal, network device, communication system, and medium

Abstract

Embodiments of the present disclosure provide a channel enhancement method, a terminal, a network device, a communication system, and a medium. The method comprises: the network device performs repetition transmission of first information to the terminal multiple times at different time domain positions, wherein the first information is information carried on a physical downlink control channel (PDCCH) that schedules a system information block (SIB) 1. In the embodiments of the present disclosure, by performing repetition transmission of the first information multiple times, the network device can enhance the PDCCH that schedules the SIB1, so that the terminal can correctly receive and demodulate the first information, and the communication quality is improved.

Description

Channel enhancement method, terminal, network equipment, communication system and medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a channel enhancement method, terminal, network equipment, communication system, and medium. Background Art

[0002] In non-terrestrial networks (NTN), terminals can communicate wirelessly via satellite to expand 5G network coverage. In NTN, satellites need to send multiple beams simultaneously, which may limit downlink coverage.

[0003] Summary of the Invention

[0004] Scenarios where NTN downlink coverage is limited will affect communication quality.

[0005] Embodiments of the present disclosure provide a channel enhancement method, terminal, network device, communication system, and medium.

[0006] In a first aspect, an embodiment of the present disclosure provides a method for channel enhancement, the method comprising:

[0007] The network device repeatedly transmits first information to the terminal multiple times at different time domain locations, where the first information is information carried by a physical downlink control channel PDCCH of a scheduling system information block SIB1.

[0008] In a second aspect, an embodiment of the present disclosure provides a method for channel enhancement, the method comprising:

[0009] The terminal receives first information repeatedly transmitted by a network device at different time domain positions, where the first information is information carried by a PDCCH for scheduling SIB1.

[0010] In a third aspect, an embodiment of the present disclosure provides a network device, including:

[0011] The transceiver module is used to repeatedly transmit first information to the terminal at different time domain positions, where the first information is information carried by the physical downlink control channel PDCCH of the scheduling system information block SIB1.

[0012] In a fourth aspect, an embodiment of the present disclosure provides a terminal, including:

[0013] The transceiver module is used to receive first information repeatedly transmitted by a network device at different time domain positions, where the first information is information carried by a PDCCH for scheduling SIB1.

[0014] In a fifth aspect, an embodiment of the present disclosure provides a network device, including:

[0015] one or more processors;

[0016] A memory coupled to the one or more processors, the memory comprising executable instructions, which, when executed by the one or more processors, causes the network device to execute the method described in the first aspect.

[0017] In a sixth aspect, an embodiment of the present disclosure provides a terminal, including:

[0018] one or more processors;

[0019] A memory coupled to the one or more processors, the memory comprising executable instructions, which, when executed by the one or more processors, causes the terminal to execute the method described in the second aspect.

[0020] In a seventh aspect, an embodiment of the present disclosure provides a communication system, comprising a network device and a terminal, wherein the network device executes the method described in the first aspect, and the terminal executes the method described in the second aspect.

[0021] In an eighth aspect, an embodiment of the present disclosure provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the method described in the first aspect or the second aspect.

[0022] In an embodiment of the present disclosure, the network device may enhance the PDCCH that schedules SIB1 by repeatedly transmitting the first information multiple times, so as to facilitate the terminal to correctly receive and demodulate the first information, thereby improving communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0024] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

[0025] FIG2 is an exemplary interaction diagram of a method provided according to an embodiment of the present disclosure;

[0026] FIG3a and FIG3b are exemplary flowcharts of a method according to an embodiment of the present disclosure;

[0027] FIG4a to FIG4c are exemplary flowcharts of a method according to an embodiment of the present disclosure;

[0028] FIG5a is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

[0029] FIG5b is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

[0030] FIG6a is a schematic diagram of a communication device according to an embodiment of the present disclosure;

[0031] FIG6 b is a schematic diagram of a communication device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] Embodiments of the present disclosure provide a channel enhancement method, terminal, network device, communication system, and medium.

[0033] In a first aspect, an embodiment of the present disclosure provides a method for channel enhancement, the method comprising:

[0034] The network device repeatedly transmits first information to the terminal multiple times at different time domain locations. The first information is information carried by a physical downlink control channel (PDCCH) that schedules system information block (SIB) 1.

[0035] In the above embodiment, the network device may enhance the PDCCH that schedules SIB1 by repeatedly transmitting the first information multiple times, so as to facilitate the terminal to correctly receive and demodulate the first information, thereby improving communication quality.

[0036] In combination with the embodiments of the first aspect, in some embodiments, the content of the first information is the same in multiple repeated transmissions.

[0037] In the above embodiment, the network device repeatedly transmits the same first information multiple times, so that the terminal can perform soft combining after receiving the first information multiple times, thereby improving processing efficiency.

[0038] In combination with the embodiments of the first aspect, in some embodiments, within the first time period, the content of the first information repeatedly transmitted is the same.

[0039] In the above embodiment, the network device repeatedly transmits the same first information multiple times within a certain period of time, so that the terminal can soft-merge the received first information within the period of time to improve processing efficiency.

[0040] In conjunction with the embodiments of the first aspect, in some embodiments, the first duration is determined according to at least one of the following:

[0041] The cycle of SIB1;

[0042] PDCCH period;

[0043] The period of the main system information block MIB;

[0044] A value defined by the protocol.

[0045] In the above embodiment, the first duration may be defined according to the periods of different related information, so as to repeatedly transmit the first information with the same content within a reasonable range.

[0046] In conjunction with the embodiments of the first aspect, in some embodiments, the aggregation level AL corresponding to the PDCCH satisfies one of the following:

[0047] Greater than or equal to the threshold;

[0048] Within the specified range.

[0049] In the above embodiment, the AL corresponding to the PDCCH may be limited, so as to reduce the number of candidate monitoring resources corresponding to the PDCCH by limiting the AL, thereby reducing the complexity of blind detection performed by the terminal.

[0050] In combination with the embodiments of the first aspect, in some embodiments, the PDCCH corresponds to at least one candidate monitoring resource, and the candidate monitoring resource is used to transmit the first information.

[0051] In the above embodiment, in the candidate monitoring resources corresponding to the PDCCH, the repeatedly transmitted first information may be in the same or different candidate monitoring resources, and the terminal blindly detects and receives the first information in the candidate monitoring resources.

[0052] In combination with the embodiments of the first aspect, in some embodiments, the candidate monitoring resources on which the first information is repeatedly transmitted multiple times meet the first rule.

[0053] In the above embodiment, the candidate monitoring resources where the first information that is repeatedly transmitted multiple times are located are limited to meet the first rule, so that the terminal can perform blind detection according to the corresponding rule, thereby reducing the complexity of the blind detection.

[0054] In conjunction with the embodiments of the first aspect, in some embodiments, the first rule includes at least one of the following:

[0055] The candidate monitoring resources where the first information is located in the multiple repeated transmissions are the same;

[0056] Each repeated transmission of the first information satisfies a configured or defined mapping relationship with the candidate monitoring resource.

[0057] In the above embodiment, according to the first rule, the network device can repeatedly transmit the first information on the same or different candidate monitoring resources, or repeatedly transmit the first information on a certain candidate monitoring resource, so that the terminal can blindly receive the first information on the corresponding candidate monitoring resource, thereby reducing the blind detection complexity of the terminal.

[0058] In combination with the embodiment of the first aspect, in some embodiments, the AL corresponding to the PDCCH in multiple repeated transmissions is the same.

[0059] In the above embodiment, it is limited that the ALs corresponding to the candidate monitoring resources for repeated transmission are the same, so that the number of candidate monitoring resources for blind detection by the terminal is the same during each repeated transmission, thereby reducing the complexity of blind detection.

[0060] In combination with the embodiments of the first aspect, in some embodiments, the candidate monitoring resource is located within a monitoring opportunity PMO for transmitting the first information.

[0061] In the above embodiment, in the candidate monitoring resources of the PMO, the network device may send the first information, and the terminal correspondingly performs blind detection in the corresponding PMO.

[0062] In combination with the embodiment of the first aspect, in some embodiments, the PMO in which the first information is repeatedly transmitted multiple times satisfies the second rule.

[0063] In the above embodiment, the PMO where the first information that is repeatedly transmitted multiple times is located satisfies the second rule, so that the terminal can determine the time domain position for blind detection and reduce the complexity of blind detection.

[0064] In conjunction with the embodiments of the first aspect, in some embodiments, the second rule includes at least one of the following:

[0065] The PMO of the first information in multiple repeated transmissions is the same;

[0066] The PMO where the first information is located in the multiple repeated transmissions conforms to one of the multiple PMO combinations.

[0067] In the above embodiment, the network device may send the first information in the same PMO during multiple repeated transmissions, or different PMOs may satisfy a certain combination, so that the terminal may obtain the first information through blind detection in a suitable PMO, thereby reducing the blind detection complexity of the terminal.

[0068] In combination with the embodiments of the first aspect, in some embodiments, the PMO combination is a protocol definition or a network device configuration.

[0069] In the above embodiment, different PMO combinations may be defined through protocol or configured by network devices to be applied during multiple repeated transmissions.

[0070] In combination with the embodiments of the first aspect, in some embodiments, the PMO combination corresponding to multiple repeated transmissions in the first transmission period is the same as or different from the PMO combination corresponding to most of the multiple repeated transmissions in the second transmission period.

[0071] In the above embodiment, in different transmission cycles, the PMO combination in which multiple repeated transmissions are performed in each transmission cycle may be the same as or different from the PMO combination in which multiple repeated transmissions are performed in other transmissions, so that in different transmission cycles, the terminal can blindly detect the corresponding first information on the corresponding PMO combination.

[0072] In a second aspect, an embodiment of the present disclosure provides a method for channel enhancement, the method comprising:

[0073] The terminal receives first information repeatedly transmitted by a network device at different time domain positions, where the first information is information carried by a PDCCH for scheduling SIB1.

[0074] In conjunction with the embodiments of the second aspect, in some embodiments, the method further includes:

[0075] The terminal performs soft combining processing on the first information received multiple times.

[0076] In combination with the embodiments of the second aspect, in some embodiments, the content of the first information is the same in multiple repeated transmissions.

[0077] In combination with the embodiment of the second aspect, in some embodiments, within the first time period, the content of the first information repeatedly transmitted is the same.

[0078] In conjunction with the embodiments of the second aspect, in some embodiments, the first duration is determined according to at least one of the following:

[0079] The cycle of SIB1;

[0080] PDCCH period;

[0081] MIB cycle;

[0082] A value defined by the protocol.

[0083] In conjunction with the embodiments of the second aspect, in some embodiments, the AL corresponding to the PDCCH satisfies one of the following:

[0084] Greater than or equal to the threshold;

[0085] Within the specified range.

[0086] In combination with the embodiments of the second aspect, in some embodiments, the PDCCH corresponds to at least one candidate monitoring resource, and the candidate monitoring resource is used to transmit the first information.

[0087] In combination with the embodiments of the second aspect, in some embodiments, the candidate monitoring resources on which the first information is repeatedly transmitted multiple times meet the first rule.

[0088] In conjunction with the embodiments of the second aspect, in some embodiments, the first rule includes at least one of the following:

[0089] The candidate monitoring resources where the first information is located in the multiple repeated transmissions are the same;

[0090] Each repeated transmission of the first information satisfies a configured or defined mapping relationship with the candidate monitoring resource.

[0091] In combination with the embodiments of the second aspect, in some embodiments, the AL corresponding to the PDCCH in multiple repeated transmissions is the same.

[0092] In combination with the embodiments of the second aspect, in some embodiments, the candidate monitoring resource is located within the PMO that transmits the first information.

[0093] In combination with the embodiments of the second aspect, in some embodiments, the PMO in which the first information is repeatedly transmitted multiple times satisfies the second rule.

[0094] In conjunction with the embodiments of the second aspect, in some embodiments, the second rule includes at least one of the following:

[0095] The PMO of the first information in multiple repeated transmissions is the same;

[0096] The PMO where the first information is located in the multiple repeated transmissions conforms to one of the multiple PMO combinations.

[0097] In conjunction with the embodiments of the second aspect, in some embodiments, the PMO combination is a protocol definition or a network device configuration.

[0098] In combination with the embodiments of the second aspect, in some embodiments, the PMO combination corresponding to multiple repeated transmissions in the first transmission period is the same as or different from the PMO combination corresponding to most of the multiple repeated transmissions in the second transmission period.

[0099] In a third aspect, an embodiment of the present disclosure provides a network device, including:

[0100] The transceiver module is used to repeatedly transmit first information to the terminal at different time domain positions, where the first information is information carried by the physical downlink control channel PDCCH of the scheduling system information block SIB1.

[0101] In a fourth aspect, an embodiment of the present disclosure provides a terminal, including:

[0102] The transceiver module is used to receive first information repeatedly transmitted by a network device at different time domain positions, where the first information is information carried by a PDCCH for scheduling SIB1.

[0103] In a fifth aspect, an embodiment of the present disclosure provides a network device, including:

[0104] one or more processors;

[0105] A memory coupled to the one or more processors, the memory comprising executable instructions, which, when executed by the one or more processors, causes the network device to execute the method described in the first aspect.

[0106] In a sixth aspect, an embodiment of the present disclosure provides a terminal, including:

[0107] one or more processors;

[0108] A memory coupled to the one or more processors, the memory comprising executable instructions, which, when executed by the one or more processors, causes the terminal to execute the method described in the second aspect.

[0109] In a seventh aspect, an embodiment of the present disclosure provides a communication system, comprising a network device and a terminal, wherein the network device executes the method described in the first aspect, and the terminal executes the method described in the second aspect.

[0110] In an eighth aspect, an embodiment of the present disclosure provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the method described in the first aspect or the second aspect.

[0111] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0112] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0113] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0114] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0115] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0116] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0117] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0118] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0119] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0120] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0121] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0122] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0123] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0124] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0125] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0126] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0127] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0128] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0129] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0130] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0131] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0132] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0133] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0134] FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0135] As shown in FIG. 1 , a communication system 100 may be an NTN system. The communication system 100 may include a terminal 101 , a network device 102 , and a satellite 103 .

[0136] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0137] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0138] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0139] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0140] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0141] In some embodiments, a core network device may be a single device comprising one or more network elements, or may be a plurality of devices or a group of devices, each comprising all or part of one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0142] In some embodiments, the satellite 103 may also be referred to as a satellite base station, and the satellite 103 may be a satellite with different orbits, altitudes, and coverage areas.

[0143] In some embodiments, in an NTN, terminal 101 can connect to network device 102 via satellite 103. Network device 102 transmits wireless resources to terminal 101 via satellite 103. For example, satellite 103 transmits signals in transparent transmission mode. The link between terminal 101 and satellite 103 is a service link, and the link between satellite 103 and network device 102 is a feeder link.

[0144] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0145] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG. 1 , or a part of the main body thereof, but are not limited thereto.

[0146] The entities shown in Figure 1 are examples. The communication system may include all or part of the entities in Figure 1, and may also include other entities outside of Figure 1. The number and form of the entities are arbitrary. The connection relationship between the entities is an example. The entities may be connected or disconnected, and the connection may be in any manner, which may be direct or indirect, and may be wired or wireless.

[0147] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0148] In the disclosed embodiment, in order to achieve a wider coverage range in NTN, the satellite needs to send multiple beams simultaneously and cannot concentrate energy on one beam, so the downlink coverage may be limited, such as the distance or intensity of the downlink coverage is limited.

[0149] In the disclosed embodiment, the first downlink signal received by terminal 101 is a synchronization signal block (SSB). Among downlink signals, SSB has strong coverage. In scenarios where downlink coverage is limited, SSB is generally unrestricted, but other downlink signals or channels may be restricted. For example, when the number of beam splitting is 8, the downlink synchronization channel is unrestricted, but the physical downlink control channel (PDCCH) and the common physical downlink shared channel (common PDSCH) have a coverage gap of 2 to 3 dB.

[0150] In the embodiment of the present disclosure, after the terminal 101 successfully receives the SSB, the first channel with coverage gap received is the PDCCH that schedules SIB 1. The embodiment of the present disclosure provides a method for enhancing the PDCCH that schedules SIB 1.

[0151] FIG2 is an interactive diagram of a channel enhancement method according to an embodiment of the present disclosure. As shown in FIG2 , an embodiment of the present disclosure relates to a channel enhancement method, the method comprising:

[0152] Step S2101, network device 102 sends SSB.

[0153] In some embodiments, the network device 102 may be a ground base station such as a ground station or a gateway in the NTN.

[0154] In some embodiments, the network device 102 may be a base station or a distributed unit (DU) or other satellite-borne equipment located on a satellite in the NTN.

[0155] In some embodiments, the network device 102 may send SSB via broadcast, and the SSB may be used for downlink synchronization.

[0156] Optionally, the SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH), wherein the time domain positions of the PSS, SSS, and PBCH information are different.

[0157] Optionally, the PBCH includes a master information block (MIB), and the MIB includes configuration information of the PDCCH that schedules SIB1.

[0158] Optionally, the MIB may be transmitted on the broadcast channel in an 80 millisecond (ms) cycle, i.e., the MIB may be repeatedly transmitted multiple times within 80 ms, with the same content. The specific number of MIB repetitions is related to the SSB cycle.

[0159] Optionally, if the period of the SSB is greater than 80ms, the MIB may be sent in the same period as the SSB, that is, the content update period of the MIB is the same as the SSB period.

[0160] The MIB is updated every 80ms. Within 80ms, received MIB information is considered identical. For example, MIB content transmitted between 0 and 80ms is identical, and MIB content transmitted between 81 and 160ms is identical. The SSB currently has a minimum period of 5ms and a maximum period of 160ms. Assuming a 20ms SSB period, the MIB is retransmitted four times within a MIB period. This means the UE can perform soft combining based on four MIB receptions.

[0161] In some embodiments, terminal 101 performs downlink synchronization according to SSB.

[0162] Optionally, the terminal 101 receives the SSB. Before the terminal 101 initiates a random access process through a preamble, the terminal 101 acquires downlink synchronization with the base station through the PSS and SSS in the SSB, and reads the PBCH after acquiring downlink synchronization.

[0163] In step S2102 , the network device 102 repeatedly transmits the first information to the terminal 101 multiple times.

[0164] In some embodiments, the first information is information carried by a PDCCH that schedules SIB1.

[0165] Optionally, the PDCCH that schedules SIB1 may be referred to as SIB1 PDCCH or the first channel, and the SIB1 PDCCH is used to transmit the first information. For example, the first information may include downlink control information (DCI) format 1-0 information scrambled using a system information radio network temporary identity (SI-RNTI). Optionally, repeatedly transmitting the first information multiple times means repeatedly transmitting the information transmitted by the first channel multiple times, or repeatedly transmitting the information multiple times through the first channel. Therefore, repeatedly transmitting the first information multiple times may be referred to as repeatedly transmitting the first channel multiple times.

[0166] Optionally, the content of the first information may include the time-frequency position of SIB1.

[0167] In some embodiments, the network device 102 may repeatedly transmit the first information to the terminal 101 multiple times at different time domain locations, i.e., repeatedly transmit the information transmitted by the first channel multiple times, or simply repeatedly transmit the first channel multiple times. From the perspective of the network device 102, this enhancement method may be referred to as SIB1 PDCCH repetition across different periods. From the perspective of the terminal 101, this enhancement method may be referred to as soft combining as an enhancement method for scheduling the PDCCH for SIB1.

[0168] Optionally, soft combining is a method in which a receiving end such as terminal 101 accumulates multiple received signals and then performs demodulation.

[0169] In some embodiments, the content of the first information is the same in multiple repeated transmissions; or, the information carried by the first channel is the same when the first information is repeatedly transmitted through the first channel.

[0170] Optionally, in conjunction with the description of the preceding embodiment, the content of the first information includes the time-frequency position of SIB1. If the time-frequency position of SIB1 is different, the content of the first information will be inconsistent, and soft combining may not be possible. In this embodiment, the content of the first information that is repeatedly transmitted is limited to remain unchanged, thereby ensuring that the first information or information transmitted by the first channel can be repeatedly transmitted, or simply, that the first channel can be repeatedly transmitted.

[0171] In some embodiments, within the first time period, the content of the first information repeatedly transmitted is the same.

[0172] In some embodiments, within the first time period, the information carried by the first channel is the same when it is repeatedly transmitted through the first channel multiple times.

[0173] Optionally, the first duration may be a duration configured by the network device 102 or defined by a protocol.

[0174] Optionally, the content of the first information is limited to be repeatedly transmitted within a certain time period without changing, which can enable the terminal 101 to achieve soft merging within the time period and ensure the scheduling flexibility of the network device 102.

[0175] Optionally, the first duration is determined according to at least one of the following:

[0176] The cycle of SIB1;

[0177] PDCCH period;

[0178] MIB cycle;

[0179] A value defined by the protocol.

[0180] For example, the first duration may be defined as a period of SIB1 or a period of MIB through a protocol, or the first duration may be defined to be associated with a period of SIB1 or a period of MIB.

[0181] In the NR system, the control-resource set (Coreset) is used to determine the frequency domain resources occupied by the PDCCH in the frequency domain and the number of orthogonal frequency division multiplexing (OFDM) symbols occupied in the time domain. The search space is used to determine the starting symbol number of the PDCCH and the monitoring period. The timing or time slot when the PDCCH may exist, determined by the PDCCH monitoring period, is called the PDCCH monitoring occasion (PMO). In a PMO, there are one or more candidate monitoring resources (PDCCH candidate resource). The terminal 101 performs PDCCH blind detection on these candidate monitoring resources.

[0182] In particular, the time-frequency resource location of the SIB1 PDCCH or the PMO and candidate monitoring resources are determined by Coreset#0 (Control resource set zero) and search space#0 (search space zero), and the configuration information of Coreset#0 and search space#0 is included in PDCCH-ConfigSIB1.

[0183] In one example, the information element (IE) of the configuration information is as follows:

[0184] }In the 8 bits corresponding to PDCCH-ConfigSIB1, the 4 most significant bits (MSB) corresponding to controlResourcesetzero define the Coreset under different situations shown in Table 1, and the 4 last significant bits (LSB) define the PMO under different situations shown in Table 2.

[0185] Table 1

[0186] Table 2

[0187] In one example, the PMO of the first channel or first message is 20ms. The first duration is the same as the MIB period, which is 80ms. Therefore, the period of the first channel or first message is the first duration, i.e., 80ms. Therefore, within one period, the first channel or first message can be repeatedly transmitted four times. In one example, the first duration can be set to X ms, where X is, for example, 80. Within this 80ms period, the content of the first message remains unchanged, and network device 102 can repeatedly transmit it.

[0188] For another example, the first duration is different from the period of SIB1 or MIB, and is a value independently defined by the protocol.

[0189] Optionally, the sending parameters corresponding to the first information repeatedly transmitted are also the same, such as the same sending level.

[0190] In step S2103, the terminal 101 performs blind detection on the SIB1 PDCCH to receive the repeatedly transmitted first information.

[0191] In some embodiments, terminal 101 determines the monitoring time slot and monitoring time-frequency resources of the first information according to base station configuration. Before SIB1 PDCCH blind detection, terminal 101 does not know the AL used by the PDCCH and will make multiple attempts on the monitoring time-frequency resources, i.e., perform SIB1 PDCCH blind detection.

[0192] Optionally, the PDCCH has different ALs. The larger the AL, the higher the aggregation level, the lower the coding efficiency, the higher the reliability of the PDCCH, and the more resources occupied.

[0193] In some embodiments, the terminal 101 performs blind detection on candidate monitoring resources on the monitoring time-frequency resources.

[0194] In some embodiments, the PDCCH corresponds to at least one candidate monitoring resource, and the candidate monitoring resource is used to transmit the first information.

[0195] Optionally, the terminal 101 blindly detects the SIB1 PDCCH or the first information on each candidate monitoring resource.

[0196] Optionally, the number of candidate monitoring resources corresponding to the PDCCH has a corresponding relationship or a mapping relationship with the AL, wherein the larger the AL is, the smaller the number of candidate monitoring resources corresponding to the PDCCH is.

[0197] For example, when the SIB1 PDCCH uses AL=8, there are two candidate monitoring resources on the monitoring time-frequency resources, and the first information is transmitted on one of the two candidate monitoring resources. For another example, when the SIB1 PDCCH uses AL=4, there are four candidate monitoring resources on the monitoring time-frequency resources, and the first information is transmitted on one of the four candidate monitoring resources. The PDCCH does not necessarily occupy all the monitoring time-frequency resources.

[0198] In the embodiments of the present disclosure, different methods may be used to reduce the complexity of blind detection by the terminal 101 .

[0199] In some embodiments, the aggregation level (AL) corresponding to the PDCCH satisfies one of the following:

[0200] Greater than or equal to the threshold;

[0201] Within the specified range.

[0202] Optionally, the PDCCH refers to a PDCCH that schedules SIB1.

[0203] Alternatively, the threshold may be network device 102 configured or defined by a protocol.

[0204] Optionally, when the threshold is configured as a maximum AL, the AL corresponding to the PDCCH may be equal to the threshold, wherein the maximum AL may be 32 or a maximum AL value defined by a protocol.

[0205] Optionally, after configuring the threshold, the AL corresponding to the PDCCH may be greater than the threshold. For example, if the threshold is 16, the AL corresponding to the PDCCH may be 32.

[0206] Optionally, the specified range may include one or more candidate AL values, and the AL corresponding to the PDCCH is selected from the one or more candidate AL values. For example, the specified range includes multiple larger AL values, such as the specified range is {AL8, AL16}, and the AL corresponding to the PDCCH can be one of {AL8, AL16}. For another example, the AL corresponding to the PDCCH selects the largest AL within the specified range, that is, 16 from {AL8, AL16}.

[0207] In this embodiment, by limiting the AL value, the number of candidate monitoring resources can be limited, thereby reducing the complexity of blind detection of the terminal 101.

[0208] In some embodiments, the candidate monitoring resource where the first information is repeatedly transmitted multiple times or the information is repeatedly transmitted multiple times through the first channel (which may be referred to as repeatedly transmitting the first channel multiple times) meets the first rule.

[0209] Alternatively, the first rule may be protocol defined or configured by the network device 102 .

[0210] Optionally, according to the first rule, the terminal 101 may perform blind detection at an appropriate time-frequency position each time to receive the first information, thereby reducing the complexity of the blind detection of the terminal 101.

[0211] Optionally, the first rule includes at least one of the following:

[0212] The candidate monitoring resources where the first information is located in the multiple repeated transmissions are the same;

[0213] Each repeated transmission of the first information satisfies a configured or defined mapping relationship with the candidate monitoring resource.

[0214] Optionally, in a scenario where there are multiple candidate monitoring resources corresponding to the SIB1 PDCCH, when the network device 102 sends the first information multiple times, the candidate monitoring resource where the first information is located each time may be the same.

[0215] In the first example, the SIB1 PDCCH corresponds to two candidate monitoring resources, denoted as candidate#0 and candidate#1. If network device 102 performs two retransmissions within 40ms, the first information in each retransmission can be either in candidate#0 or in candidate#1. The first information in the first retransmission is denoted as rep#1, and the first information in the second retransmission is denoted as rep#2.

[0216] In this example, terminal 101 can try the combination of candidate#0 of rep#1 and candidate#0 of rep#2, as well as the combination of candidate#1 of rep#1 and candidate#1 of rep#2. That is, the terminal assumes that the locations of the two repeated transmissions of PDCCH are the same, without having to try the combination of candidate#0 of rep#1 and candidate#1 of rep#2, as well as the combination of candidate#1 of rep#1 and candidate#0 of rep#2, thereby reducing the complexity of blind detection by terminal 101.

[0217] Optionally, the mapping relationship may define candidate monitoring resources corresponding to each transmission.

[0218] Based on the mapping relationship, the candidate monitoring resources where the repeated transmissions are located may be different.

[0219] For example, the first repeated transmission uses the first candidate monitoring resource, the second repeated transmission uses the second candidate monitoring resource, the third repeated transmission uses the first candidate monitoring resource, and the fourth repeated transmission uses the second candidate monitoring resource.

[0220] In the second example, the SIB1 PDCCH corresponds to two candidate monitoring resources, denoted as candidate#0 and candidate#1. If network device 102 performs two retransmissions within 40ms, the first message of the first retransmission is rep#1, and the first message of the second retransmission is rep#2. Rep#1 is transmitted using candidate#0, and rep#2 is transmitted using candidate#1, or rep#1 is transmitted using candidate#1, and rep#2 is transmitted using candidate#0.

[0221] In this example, terminal 101 can try the combination of candidate#0 of rep#1 and candidate#1 of rep#2, or try the combination of candidate#1 of rep#1 and candidate#0 of rep#2, without having to try the same combination of candidates of rep#1 and rep#2, so as to reduce the complexity of terminal blind detection.

[0222] Optionally, when combining candidate monitoring resources of multiple PMOs, the following combination rule may be used: determine the candidate monitoring resource for each subsequent repeated transmission based on the candidate monitoring resource that appears first, if the candidate monitoring resource that appears first has a smaller sequence number.

[0223] In the third example, the SIB1 PDCCH corresponds to two candidate monitoring resources, designated candidate#0 and candidate#1. If network device 102 performs two retransmissions within 40ms, the first message of the first retransmission is rep#1, and the first message of the second retransmission is rep#2. Rep#1 is transmitted using candidate#0, and rep#2 is transmitted using candidate#1.

[0224] In this example, terminal 101 may try the combination of candidate#0 of rep#1 and candidate#1 of rep#2 without trying other combinations, thereby reducing blind detection complexity.

[0225] In some embodiments, the AL corresponding to the PDCCH in multiple repeated transmissions is the same.

[0226] Optionally, the AL corresponding to or used by the SIB PDCCH is the same during each repeated transmission, thereby ensuring that the number of candidate monitoring resources is the same during each repeated transmission, which is beneficial to reducing the complexity of the terminal 101 during the blind detection process.

[0227] In some embodiments, the candidate monitoring resource is located within a monitoring opportunity for transmitting the first information.

[0228] Optionally, the PMO may be a time slot. The PMO may include or be used to determine candidate monitoring resources, such as the symbol where the candidate monitoring resource is located and the corresponding frequency domain resources. For example, if the PMO is slot 1, the candidate monitoring resources may include symbols 1 to 3 in slot 1 and the corresponding frequency domain resources. Terminal 101 may perform blind detection on the resources consisting of these three symbols and the corresponding frequency domain resources. If different ALs are used for repeated transmissions of the PDCCH, the PDCCH may be located in different locations.

[0229] Optionally, when determining a PMO for repeated transmissions, such as when it corresponds to only one time slot, the corresponding candidate monitoring resources may be determined with reference to the above embodiment. In some scenarios, the PMO may correspond to two time slots. In this case, the blind detection complexity in the candidate monitoring resources of the two time slots may be higher. To reduce the complexity in this scenario, reference may also be made to the implementation of the following embodiment.

[0230] Optionally, the PMO in which the first information is repeatedly transmitted multiple times satisfies the second rule.

[0231] The second rule may be determined according to the configuration of the network device 102 or according to a protocol definition.

[0232] Optionally, the second rule includes at least one of the following:

[0233] The PMO of the first information in multiple repeated transmissions is the same;

[0234] The PMO where the first information is located in the multiple repeated transmissions conforms to one of the multiple PMO combinations.

[0235] In the process of repeated transmission, the same PMO may mean that the first information of each transmission is in slot n.

[0236] Optionally, the PMO combination is a protocol definition or a network device configuration.

[0237] Optionally, the PMO combination may also be represented or replaced by an association relationship, pattern, or mapping relationship between each repeated transmission and the PMO.

[0238] In one example, for CORESET & SSB multiplexing pattern #1, terminal 101 continuously monitors the SIB1 PDCCH or first information for one associated SSB index in two time slots (e.g., slot 1 and slot 2). The time domain positions of the PMOs between repeated transmissions of different SIB1 PDCCHs or first information are associated.

[0239] In this example, the first information has the same PMO in multiple repeated transmissions. For example, the number of repeated transmissions is 4 times or a maximum of 4 times. The PMO time domain positions of the 4 repeated transmissions are the same, that is, they are located in the same time slot, such as all located in slot 1, or all located in slot 2.

[0240] In this example, the PMO of the first information in the multiple repeated transmissions satisfies one of the multiple PMO combinations. For example, if the number of repeated transmissions is 4, the PMOs of the 4 times satisfy at least one of the following PMO combinations:

[0241] slot 1, slot 1, slot 2, slot 2;

[0242] slot 2, slot 1, slot 2, slot 1;

[0243] slot 1, slot 2, slot 1, slot 2.

[0244] In other examples, the PMO where the repeated transmission occurs may also be determined based on the frame number and period.

[0245] Optionally, the PMO combination corresponding to the multiple repeated transmissions in the first transmission cycle is the same as or different from the PMO combination corresponding to the majority of the multiple repeated transmissions in the second transmission cycle.

[0246] In other words, the association relationship corresponding to the PMO in the first transmission cycle is the same as or different from the association relationship corresponding to the PMO in the second transmission cycle.

[0247] Optionally, the first transmission period and the second transmission period may refer to periods corresponding to repeated transmissions.

[0248] In one example, the maximum number of repetitions required for the SIB1 PDCCH or the first information is 4. For example, 8 repetitions can be performed within 160 ms, thereby forming two repetition transmission cycles within 160 ms. The first transmission cycle can be 0 to 80 ms, and the second transmission cycle can be 81 ms to 160 ms.

[0249] In this example, the PMO combinations or corresponding associations in the two transmission cycles can be the same or different. For example, during the first 80ms transmission cycle, the following PMO combination is used: slot 1, slot 2, slot 1, slot 2; and during the second 80ms transmission cycle, the following PMO combination is used: slot 2, slot 1, slot 2, slot 1.

[0250] In some embodiments, the terminal 101 receives the first information multiple times through blind detection.

[0251] In step S2104, the terminal 101 performs soft combining processing on the first information received multiple times.

[0252] In some embodiments, the terminal 101 performs soft combining based on several times of first information, which may depend on the terminal implementation.

[0253] Optionally, the terminal 101 may perform a soft combining process on the received first information for several times to obtain accumulated information. Alternatively, the terminal 101 performs a soft combining process each time it receives the first information, and performs soft combining multiple times to obtain accumulated information.

[0254] Alternatively, assuming that the AL is 16, corresponding to one candidate monitoring resource, and that the AL and monitoring time slots of multiple repeated transmissions within 80ms remain unchanged (the time slots for repeated transmissions remain slot#0 and slot#1). Terminal 101 can use AL=16 to perform blind detection in slot#0 and slot#1, accumulating the signals received four times in slot#0 and the signals received four times in monitoring time slot#1, thereby performing two soft combining operations within one cycle and attempting to decode the soft combining information of different time slots separately.

[0255] As can be understood, for example, when soft merging of MIBs is performed, when terminal 101 initiates initial access, the default SSB period is 20ms. During the initial access phase of terminal 101, assuming that SSBs are sent every 20ms, that is, MIBs can be received once every 20ms, then four MIBs can be received within 80ms, and terminal 101 can perform one or four soft merging operations.

[0256] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", and "field" can be used interchangeably.

[0257] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0258] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0259] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0260] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0261] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0262] In some embodiments, the terms "component carrier (CC)", "cell", "frequency carrier", "carrier frequency" and the like can be used interchangeably.

[0263] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0264] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0265] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0266] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2104. For example, step S2102 may be used as an embodiment, steps S2102 to S2103 may be used as an embodiment, and steps S2102 to S2104 may be used as an embodiment, but are not limited thereto.

[0267] In some embodiments, at least one of steps S2101 and S2104 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0268] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0269] FIG3a is a schematic diagram of a channel enhancement method according to an embodiment of the present disclosure. As shown in FIG3a, an embodiment of the present disclosure relates to a channel enhancement method, which is performed by a network device 102 and includes:

[0270] Step S3101, send SSB.

[0271] In some embodiments, the implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2, and will not be repeated here.

[0272] In some embodiments, the network device 102 may send SSB to a terminal, but is not limited thereto and may also send SSB to other entities.

[0273] Step S3102: repeatedly transmit the first information multiple times.

[0274] In some embodiments, the implementation of step S3102 can refer to the optional implementation of steps S2102 to S2103 in Figure 2, and will not be repeated here.

[0275] In some embodiments, the network device 102 may send the first information to a terminal, but is not limited thereto and may also send the first information to other entities.

[0276] In some embodiments, step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0277] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 a .

[0278] FIG3b is a schematic diagram of a channel enhancement method according to an embodiment of the present disclosure. As shown in FIG3b, an embodiment of the present disclosure relates to a channel enhancement method, which is performed by a network device 102 and includes:

[0279] In step S3201, the network device 102 repeatedly transmits first information to the terminal 101 at different time domain locations.

[0280] In some embodiments, the implementation of step S3201 can refer to the optional implementation of steps S2102 to S2103 in Figure 2, and will not be repeated here.

[0281] In some embodiments, the first information is information carried by a PDCCH that schedules SIB1.

[0282] In some embodiments, the content of the first information is the same in multiple repeated transmissions.

[0283] In some embodiments, within the first time period, the content of the first information repeatedly transmitted is the same.

[0284] Optionally, the first duration is determined according to at least one of the following:

[0285] The cycle of SIB1;

[0286] PDCCH period;

[0287] MIB cycle;

[0288] A value defined by the protocol.

[0289] In some embodiments, the aggregation level AL corresponding to the PDCCH satisfies one of the following:

[0290] Greater than or equal to the threshold;

[0291] Within the specified range.

[0292] In some embodiments, the PDCCH corresponds to at least one candidate monitoring resource, and the candidate monitoring resource is used to transmit the first information.

[0293] In some embodiments, the candidate monitoring resources on which the first information is repeatedly transmitted multiple times meet the first rule.

[0294] Optionally, the first rule includes at least one of the following:

[0295] The candidate monitoring resources where the first information is located in the multiple repeated transmissions are the same;

[0296] Each repeated transmission of the first information satisfies a configured or defined mapping relationship with the candidate monitoring resource.

[0297] In some embodiments, the AL corresponding to the PDCCH in multiple repeated transmissions is the same.

[0298] In some embodiments, the candidate monitoring resource is located within a monitoring opportunity PMO for transmitting the first information.

[0299] In some embodiments, the PMO in which the first information is repeatedly transmitted multiple times satisfies the second rule.

[0300] Optionally, the second rule includes at least one of the following:

[0301] The PMO of the first information in multiple repeated transmissions is the same;

[0302] The PMO where the first information is located in the multiple repeated transmissions conforms to one of the multiple PMO combinations.

[0303] Optionally, the PMO combination is a protocol definition or a network device configuration.

[0304] Optionally, the PMO combination corresponding to the multiple repeated transmissions in the first transmission cycle is the same as or different from the PMO combination corresponding to the majority of the multiple repeated transmissions in the second transmission cycle.

[0305] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 b .

[0306] FIG4a is a schematic diagram of a channel enhancement method according to an embodiment of the present disclosure. As shown in FIG4a, the embodiment of the present disclosure relates to a channel enhancement method, which is executed by terminal 101 and includes:

[0307] Step S4101, obtain SSB.

[0308] In some embodiments, the implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2, which will not be repeated here.

[0309] In some embodiments, the terminal may obtain the SSB from the network device 102, but is not limited thereto and may also obtain the SSB from other entities.

[0310] Step S4102: Perform blind detection on the SIB1 PDCCH to receive the repeatedly transmitted first information.

[0311] In some embodiments, the implementation of step S4102 can refer to the optional implementation of steps S2102 to S2103 in Figure 2, and will not be repeated here.

[0312] Step S4103: soft-combining the first information received multiple times.

[0313] In some embodiments, the implementation of step S4103 can refer to the optional implementation of step S2104 in Figure 2, and will not be repeated here.

[0314] In some embodiments, at least one of step S4101 and step S4103 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0315] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 a .

[0316] FIG4b is a schematic diagram of a channel enhancement method according to an embodiment of the present disclosure. As shown in FIG4b, the embodiment of the present disclosure relates to a channel enhancement method, which is executed by terminal 101 and includes:

[0317] Step S4201: Perform blind detection on the SIB1 PDCCH to receive multiple times of repeatedly transmitted first information.

[0318] In some embodiments, the implementation of step S4201 can refer to the optional implementation of steps S2102 to S2103 in Figure 2, and will not be repeated here.

[0319] Step S4202: soft-combining the first information received multiple times.

[0320] In some embodiments, the implementation of step S4202 can refer to the optional implementation of step S2104 in Figure 2, which will not be repeated here.

[0321] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4 b .

[0322] FIG4c is a schematic diagram of a channel enhancement method according to an embodiment of the present disclosure. As shown in FIG4c, an embodiment of the present disclosure relates to a channel enhancement method, which is executed by terminal 101 and includes:

[0323] Step S4301: Receive first information that is repeatedly transmitted multiple times by the network device 102 at different time domain locations.

[0324] In some embodiments, the implementation of step S4301 can refer to the optional implementation of steps S2102 to S2103 in Figure 2, and will not be repeated here.

[0325] In some embodiments, the first information is information carried by a PDCCH that schedules SIB1.

[0326] In some embodiments, the method further includes: the terminal performing soft combining processing on the first information received multiple times.

[0327] In some embodiments, the first information is information carried by a PDCCH that schedules SIB1.

[0328] In some embodiments, the content of the first information is the same in multiple repeated transmissions.

[0329] In some embodiments, within the first time period, the content of the first information repeatedly transmitted is the same.

[0330] Optionally, the first duration is determined according to at least one of the following:

[0331] The cycle of SIB1;

[0332] PDCCH period;

[0333] MIB cycle;

[0334] A value defined by the protocol.

[0335] In some embodiments, the aggregation level AL corresponding to the PDCCH satisfies one of the following:

[0336] Greater than or equal to the threshold;

[0337] Within the specified range.

[0338] In some embodiments, the PDCCH corresponds to at least one candidate monitoring resource, and the candidate monitoring resource is used to transmit the first information.

[0339] In some embodiments, the candidate monitoring resources on which the first information is repeatedly transmitted multiple times meet the first rule.

[0340] Optionally, the first rule includes at least one of the following:

[0341] The candidate monitoring resources where the first information is located in the multiple repeated transmissions are the same;

[0342] Each repeated transmission of the first information satisfies a configured or defined mapping relationship with the candidate monitoring resource.

[0343] In some embodiments, the AL corresponding to the PDCCH in multiple repeated transmissions is the same.

[0344] In some embodiments, the candidate monitoring resource is located within a monitoring opportunity PMO for transmitting the first information.

[0345] In some embodiments, the PMO in which the first information is repeatedly transmitted multiple times satisfies the second rule.

[0346] Optionally, the second rule includes at least one of the following:

[0347] The PMO of the first information in multiple repeated transmissions is the same;

[0348] The PMO where the first information is located in the multiple repeated transmissions conforms to one of the multiple PMO combinations.

[0349] Optionally, the PMO combination is a protocol definition or a network device configuration.

[0350] Optionally, the PMO combination corresponding to the multiple repeated transmissions in the first transmission cycle is the same as or different from the PMO combination corresponding to the majority of the multiple repeated transmissions in the second transmission cycle.

[0351] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 4c.

[0352] In the channel enhancement method of the embodiment of the present disclosure, the SIB1 PDCCH can be enhanced by repeated transmission. In addition, considering the complexity of PDCCH blind detection and the more complex monitoring time slots of SIB1 PDCCH compared to dedicated PDCCH, the embodiment of the present disclosure can reduce the complexity of UE blind detection. For ease of understanding, some specific examples are listed below:

[0353] The examples of the first aspect are used to describe SIB1 PDCCH repetition, i.e., the enhanced method. The SIB1 PDCCH is the PDCCH that schedules SIB1, and the examples of the first aspect include Examples 1 to 5:

[0354] Example 1:

[0355] The SIB1 PDCCH repetition across different periods is used, which is also called soft combining, as an enhancement scheme for scheduling the SIB1 PDCCH.

[0356] Example 2:

[0357] The content of the PDCCH scheduling SIB1 that is restricted from multiple transmissions does not change, that is, it is guaranteed that the PDCCH scheduling SIB1 can be repeatedly transmitted.

[0358] Example 3:

[0359] Considering the flexibility of base station scheduling, the content of PDCCH is restricted to be unchanged within a certain period of time. That is, similar to the MIB period or SIB1 period, the period of PDCCH scheduling SIB1 is X ms (for example, X=80). The content of PDCCH scheduling SIB1 remains unchanged within the period and can be repeatedly transmitted. For example, if:

[0360] In an optional example, the UE does not want the PDCCH scheduling SIB1 within the Xms period to be unable to be repeatedly transmitted or the content to be changed;

[0361] In an optional example, the UE assumes that the PDCCH scheduling SIB1 within the X ms period is repeatedly transmitted or the content remains unchanged.

[0362] Optionally, within X ms, the UE performs soft combining based on several repeated transmissions, which may depend on UE implementation.

[0363] Example 4:

[0364] Based on Example 3, X is a predefined value, which is different from the period of SIB1 or MIB and is a separately defined value.

[0365] Example 5:

[0366] Based on Example 3, X is a predefined value associated with the period of SIB1 or MIB, for example, equal to the period of MIB, or equal to the period of SIB1.

[0367] The example of the second aspect is used to reduce the blind detection complexity during repeated transmission of the SIB1 PDCCH. The different examples of the two aspects can be combined, and the examples of the second aspect include Examples 6 to 10:

[0368] Example 6:

[0369] In the PDCCH enhancement scheme that restricts SIB1, AL is fixed to the maximum AL, or AL can only be one of the larger X, for example, AL can only be one of {AL8, AL16}. The maximum AL can be AL32 (if AL32 is supported, otherwise it can be the maximum AL value supported by the current standard).

[0370] By limiting AL, the number of PDCCH candidate monitoring resources (candidates) is reduced. For example, if:

[0371] (1) The UE does not want the AL of the PDCCH of the enhanced scheduling SIB1 to be less than ALX or not equal to ALX;

[0372] (2) The UE assumes that the AL of the PDCCH of the enhanced scheduling SIB1 is not less than ALX, or is equal to ALX.

[0373] Example 7:

[0374] In the case of multiple PDCCH monitor occasions (PMOs), the PDCCH monitor resources where multiple repeated transmissions occur have a specific relationship. For example, assume there are two PDCCH monitor candidates (candidate#0 and candidate#1) in the search space, and there are two PDCCH repetitions within 40ms. The UE can try four combinations, including:

[0375] (1) candidate#0 of rep#1 and candidate#0 of rep#2;

[0376] (2) candidate#0 of rep#1 and candidate#1 of rep#2;

[0377] (3) candidate#1 of rep#1 and candidate#0 of rep#2;

[0378] (4) candidate#1 of rep#1 and candidate#1 of rep#2;

[0379] Alternatively, if the restriction is to the same candidate, there are only two combinations to try, namely (1) and (4);

[0380] Alternatively, if the restriction is to different candidates, there are only two combinations to try, namely (2) and (3);

[0381] Optionally, the candidate is related to the time of appearance. For example, the candidate that appears first has a smaller sequence number, so the combination is only (2).

[0382] Example 8:

[0383] The ALs of multiple PDCCHs in repeated transmission are the same.

[0384] Example 9:

[0385] The PMOs (Peripheral Motion Odds) between the N repeated transmissions have a certain correlation relationship.

[0386] For example, for CORESET&SSB multiplexing mode #1, a terminal continuously monitors SIB1 PDCCH in two slots for one associated SSB index. Therefore, the time domain positions of PMOs between different PDCCH retransmissions can be correlated.

[0387] For example, when the number of repeated transmissions is 4 or a maximum of 4, the PMO time domain positions between the 4 repeated transmissions are the same, for example, they are all located in the same slot (the previous one or the next one of the two slots).

[0388] Alternatively, the PMO time domain relationship between the four repeated transmissions is determined according to a certain pattern, for example: slot#1, slot#1, slot#2, slot#2; or slot#2, slot#1, slot#2, slot#1; slot#1, slot#2, slot#1, slot#2, etc.

[0389] Optionally, one of the above multiple mapping relationships can be indicated by the base station or defined by the protocol.

[0390] Optionally, the above PMO association relationship can be the same or different between two repeated transmission periods. For example, the maximum number of repeated transmissions required for SIB1 PDCCH is 4 times. For SIB1, it can be repeated 8 times within 160 ms. Therefore, two repeated transmission periods can be formed within 160 ms. Further, between the two periods, the association relationship between PMOs can be the same or different. For example, within the first 80 ms, slots #1, #2, #1, #2 are used; within the second 80 ms, slots #2, #1, #2, #1 can be used, or vice versa, etc.

[0391] Example Ten:

[0392] Examples Six to Nine can be used alone or in combination.

[0393] The following lists a specific example:

[0394] Example 1: After the UE obtains downlink synchronization with the base station through the primary synchronization signal and the secondary synchronization signal, it determines that the cell has enhanced the SIB1 PDCCH according to the information indication in the PBCH.

[0395] The UE compares the RSRP measured based on the SSB with the pre-defined RSRP threshold, and determines that SSB-RSRP < RSRP threshold. At this time, the UE determines to apply the enhanced SIB1 PDCCH monitoring scheme.

[0396] According to the pre-defined rules, the UE determines that the period of the enhanced SIB1 PDCCH is the same as that of the MIB, which is 80 ms, the AL is pre-defined as 16 (only 1 candidate), and the AL and the listening time slots for multiple repeated transmissions within 80 ms remain unchanged. What the UE does is to use AL = 16, accumulate the signals received in the 4 listening time slots of slot #0, and accumulate the signals received in the 4 listening time slots of slot #1. Thus, the UE can perform up to 2 soft combinations within one period, and separately attempt to decode the soft combination information of different time slots.

[0397] The embodiments of the present disclosure also propose a device for implementing any of the above methods. For example, a device is proposed. The above device includes units or modules for implementing each step performed by the terminal in any of the above methods. Again, another device is proposed, including units or modules for implementing each step performed by network devices (such as access network devices, core network function nodes, core network devices, etc.) in any of the above methods.

[0398] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0399] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0400] Figure 5a is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in Figure 5a, terminal 5100 may include at least one of a transceiver module 5101 and a processing module 5102. In some embodiments, transceiver module 5101 is configured to receive first information repeatedly transmitted by a network device at different time domain locations, where the first information is information carried by a PDCCH that schedules SIB1.

[0401] Optionally, the transceiver module 5101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods, which will not be described in detail here. Optionally, the processing module is used to perform at least one of the other steps performed by the terminal 101 in any of the above methods, which will not be described in detail here.

[0402] Figure 5b is a schematic diagram of the structure of a network device according to an embodiment of the present disclosure. As shown in Figure 5b, network device 5200 may include at least one of a transceiver module 5201 and a processing module 5202. In some embodiments, transceiver module 5201 repeatedly transmits first information to a terminal multiple times at different time domain locations. The first information is information carried by a physical downlink control channel (PDCCH) of a scheduling system information block (SIB1).

[0403] Optionally, the transceiver module 5201 is configured to execute at least one of the communication steps of sending and / or receiving performed by the network device 102 in any of the above methods, which are not described in detail here. Optionally, the processing module is configured to execute at least one of the other steps performed by the network device 102 in any of the above methods, which are not described in detail here.

[0404] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0405] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0406] Figure 6a is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal implementing any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0407] As shown in Figure 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 6100 is used to perform any of the above methods. Optionally, one or more processors 6101 are used to call instructions to enable the communication device 6100 to perform any of the above methods.

[0408] In some embodiments, the communication device 6100 further includes one or more transceivers 6102. When the communication device 6100 includes one or more transceivers 6102, the transceiver 6102 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method, and the processor 6101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0409] In some embodiments, the communication device 6100 further includes one or more memories 6103 for storing data. Alternatively, all or part of the memories 6103 may be located outside the communication device 6100. In alternative embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuits 6104 are connected to the memories 6103 and may be configured to receive data from the memories 6103 or other devices, or to send data to the memories 6103 or other devices. For example, the interface circuits 6104 may read data stored in the memories 6103 and send the data to the processor 6101.

[0410] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0411] FIG6b is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6b , but the present disclosure is not limited thereto.

[0412] The chip 6200 includes one or more processors 6201. The chip 6200 is configured to execute any of the above methods.

[0413] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Alternatively, all or part of memory 6203 may be located external to chip 6200. Optionally, interface circuit 6202 is connected to memory 6203 and may be used to receive data from memory 6203 or other devices, or may be used to send data to memory 6203 or other devices. For example, interface circuit 6202 may read data stored in memory 6203 and send the data to processor 6201.

[0414] In some embodiments, the interface circuit 6202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method. For example, the interface circuit 6202 performing the communication steps, such as sending and / or receiving, in the above-described method means that the interface circuit 6202 performs data exchange between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of the other steps.

[0415] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0416] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0417] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0418] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods. Industrial Applicability

[0419] The network device may enhance the PDCCH that schedules SIB1 by repeatedly transmitting the first information multiple times, so as to facilitate the terminal to correctly receive and demodulate the first information, thereby improving the communication quality.

Claims

1. A method for channel enhancement, the method comprising: The network device repeatedly transmits the first information to the terminal multiple times at different time domain positions, where the first information is information carried by a physical downlink control channel PDCCH of a scheduling system information block SIB1.

2. The method of claim 1, wherein: In multiple repeated transmissions, the content of the first information is the same.

3. The method of claim 1, wherein: Within the first time period, the content of the first information transmitted repeatedly for multiple times is the same.

4. The method of claim 3, wherein: The first duration is determined according to at least one of the following: The period of the SIB1; The period of the PDCCH; The period of the main system information block MIB; A value defined by the protocol.

5. The method according to any one of claims 1 to 4, wherein: The aggregation level AL corresponding to the PDCCH satisfies one of the following: Greater than or equal to the threshold; Within the specified range.

6. The method according to any one of claims 1 to 4, wherein: The PDCCH corresponds to at least one candidate monitoring resource, and the candidate monitoring resource is used to transmit the first information.

7. The method of claim 6, wherein: The candidate monitoring resources on which the first information is transmitted repeatedly for multiple times satisfy the first rule.

8. The method of claim 7, wherein: The first rule includes at least one of the following: The candidate monitoring resources where the first information is located in multiple repeated transmissions are the same; Each repeated transmission of the first information satisfies a configured or defined mapping relationship with the candidate monitoring resource.

9. The method of claim 6, wherein: The AL corresponding to the PDCCH in multiple repeated transmissions is the same.

10. The method of claim 6, wherein: The candidate monitoring resource is located within a monitoring opportunity PMO for transmitting the first information.

11. The method of claim 10, wherein: The PMO in which the first information is transmitted repeatedly for multiple times satisfies the second rule.

12. The method of claim 11, wherein: The second rule includes at least one of the following: The PMO of the first information in multiple repeated transmissions is the same; The PMO in which the first information is located in the multiple repeated transmissions conforms to one of multiple PMO combinations.

13. The method of claim 12, wherein: The PMO combination is the protocol definition or the network device configuration.

14. The method of claim 12, wherein: The PMO combination corresponding to the multiple repeated transmissions in the first transmission cycle is the same as or different from the PMO combination corresponding to the majority of the multiple repeated transmissions in the second transmission cycle.

15. A method for channel enhancement, the method comprising: The terminal receives first information repeatedly transmitted by a network device at different time domain positions, where the first information is information carried by a PDCCH for scheduling SIB1.

16. The method of claim 15, wherein: The method further comprises: The terminal performs soft combining processing on the first information received multiple times.

17. The method of claim 15, wherein: In multiple repeated transmissions, the content of the first information is the same.

18. The method of claim 15, wherein: Within the first time period, the content of the first information transmitted repeatedly for multiple times is the same.

19. The method of claim 18, wherein: The first duration is determined according to at least one of the following: The period of the SIB1; The period of the PDCCH; MIB cycle; A value defined by the protocol.

20. The method according to any one of claims 15 to 19, wherein: The AL corresponding to the PDCCH satisfies one of the following: Greater than or equal to the threshold; Within the specified range.

21. The method according to any one of claims 15 to 19, wherein: The PDCCH corresponds to at least one candidate monitoring resource, and the candidate monitoring resource is used to transmit the first information.

22. The method of claim 21, wherein: The candidate monitoring resources on which the first information is transmitted repeatedly for multiple times satisfy the first rule.

23. The method of claim 22, wherein: The first rule includes at least one of the following: The candidate monitoring resources where the first information is located in multiple repeated transmissions are the same; Each repeated transmission of the first information satisfies a configured or defined mapping relationship with the candidate monitoring resource.

24. The method of claim 21, wherein: The AL corresponding to the PDCCH in multiple repeated transmissions is the same.

25. The method of claim 21, wherein: The candidate monitoring resource is located within the PMO that transmits the first information.

26. The method of claim 25, wherein: The PMO in which the first information is transmitted repeatedly for multiple times satisfies the second rule.

27. The method of claim 26, wherein: The second rule includes at least one of the following: The PMO of the first information in multiple repeated transmissions is the same; The PMO in which the first information is located in the multiple repeated transmissions conforms to one of multiple PMO combinations.

28. The method of claim 27, wherein: The PMO combination is the protocol definition or the network device configuration.

29. The method of claim 27, wherein: The PMO combination corresponding to the multiple repeated transmissions in the first transmission cycle is the same as or different from the PMO combination corresponding to the majority of the multiple repeated transmissions in the second transmission cycle.

30. A network device comprising: The transceiver module is used to repeatedly transmit first information to the terminal at different time domain positions, where the first information is information carried by the physical downlink control channel PDCCH of the scheduling system information block SIB1.

31. A terminal, comprising: The transceiver module is used to receive first information repeatedly transmitted by a network device at different time domain positions, where the first information is information carried by a PDCCH for scheduling SIB1.

32. A network device comprising: one or more processors; A memory coupled to the one or more processors, the memory comprising executable instructions, and when the one or more processors execute the executable instructions, the network device executes the method according to any one of claims 1 to 14.

33. A terminal, comprising: one or more processors; A memory coupled to the one or more processors, the memory comprising executable instructions, and when the one or more processors execute the executable instructions, the terminal executes the method according to any one of claims 15 to 29.

34. A communication system, comprising a network device and a terminal, wherein: The network device executes the method according to any one of claims 1 to 14, and the terminal executes the method according to any one of claims 15 to 29.

35. A storage medium storing instructions, which, when executed on a communication device, causes the communication device to execute the method according to any one of claims 1 to 14 or any one of claims 15 to 23.

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